Fitness trends come and go, but pedaling in place on an exercise bike is a classic, low-impact way to nurture cardiovascular fitness. Whether you prefer to tool along at a moderate pace a few times a week or tackle intense, studio-style workouts daily, we’ve found six bikes that will please a variety of riders.Over five years of testing, we’ve concluded that the Schwinn IC4 (also sold as the BowFlex C6) is the best magnetic-resistance indoor-cycling bike for those who prioritize versatility and want the option of adding their own touchscreen.Among our other recommendations is a recumbent bike and, yes, a Peloton.